Valve and valve-operating mechanism.



F. LOBDIGE.

VALVE AND VALVE OPERATING MECHANISM.

APPLIOATION FILED MAY 21, 1910.

978,463. Patented Dec. 13, 1910;

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F. LOEDIGE.

VALVE AND VALVE OPERATING MECHANISM.

APPLICATION FILED MAY 21, 1910.

978,463. Patented Dec. 13, 1910.

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Specification of Letters Patent. Patented Dec. 13, 1910. Application filed May 21, 1910. Serial No; 562,587.

To all whom it may concern:

Be it known that I, Fan!) Lonman, a citizen of the United States, residing at Chi cago, in the county of Cookand State of Illinois, have invented a new and useful Impi'ovement in Valves and Valve-Operating echanism, of which the following is a specification.

My invention relates 1particularly to valvemechanism for contrd ing the passage of steam to the blower'usually employed on steam-locomotives at the smoke-arch thereof for producing a forced draft through they stack and mixing the products of combustion therein with steam, whenthe throttle controlling the assage of steam to the drivoperatin positively and in a manner to automatica y efi'ect introduction of steam into the 'blower when the throttle is moved to closed position, and to shut off the suply of steam to'the blower when the thrott e is opened, without aflectin the positioning of the throttle when move to closed position; and another object is to provide an improved construction of rotary valve so balanced as to be readil operated-with relatively low power re ar' less of the pressure of the fluid controlle thereby.

Referring to the accompanying drawings-Figure 1 is a plan view of the rear end of a locomotive boiler equipped with my improvements. Fig."2is a view in elevation thereof. Fig. =3is a section taken at the line 3 on Fig. l and viewed in the direction of,

the arrow. Fig. 4 is a section taken at the line'4 on Fig.3 and viewed in the directionof the arrow; and Fig. 5, a section taken at the line 5 on Fig. 3- and viewed in the direction of the arrow. l i

A locomotive boileris represented at 6 and, as is common in constructions of this kind, is provided with a rearwardly-extending stud 7 secured to 'its rear end 8 and forming afulcrum, as indicated at,,9, for a throttle-lever 10 pivoted between itsgends, at

' -11,to aiorwardly-extendin throttleerod 12 for operatingthe valves 7 not f the valve is opened, as hereinafter described,

steam from the boiler will pass 'into the blower and tlience into the stack. The easing 14 contains a rotary valve 17, the stem 18 ofwhich extends downwardly through the casing 14, carries a horizonta y-disp'osed crank-arm 19 which has pivotal connection, as indicated at 20,'with the forward end of a link 21, pivoted as indicated at 22 to the lever 10 at a point intermediate the oint ofconnection of the rod 12 with thls lever and its handle-equipped outer end, whereby when the lever is moved in o posite directions the valve 13 will'open or c ose depending on the direction in which it is moved, the parts of the valve herejnafterldescribed being so arranged that when the throttle-lever 10 is moved to closed position (Figs. 1 and 2) the valve 13 will be open and when swung on its fulcrum from closed to open condition, it will operate to move the valve 13 to closed condition through the-medium of the crank '19 and link 21. r d

A description of the particular valve illusthrough the bottom of.the casing 14 and through an externally-threaded boss 29 provided'thereon. H 4

' Located-in'the chamber 24, which is of cylindrical shape in cross-section, is the as represented (in Fig., 2, and

valve-proper 17, the latter being in the form .of'a cylindrical diskfittmg flatwise against the. seat 23 and connected with the depend ing stem 18 which latter is journaled in the section 27 and extends through the boss 29. "he disk 23 is provided on its upper end .with a boss 30 concentric with the stem 18, which is journaled in an opening 31 in a cappiece screwed into the upper open end of the casing 14 and bears against the inner end of a coiled spring 33 confined in the opening 31, for a purpose hereinafter explainedi The disk 17 which is of slightly less diameter and thickness than the width and height of the chamber 21, respectively, whereby it is spaced at its upper and circumferential surfaces from the cylindrical and top walls of thechamber 24, contains a plurality of radially-extending openings3t with which openings 'extending through the under-side "of the disk 17 communicate, as represented in Fig. 3, these openings 34 and 35 being of a number corresponding with the number of openings in the seat 23 and arranged in a circular series equidistant from each other and adapted to bemoved -1I1t0 registration with the openings 26 in the seat 23 by turning the stem 18. m

It will be manifest from the foregoing that the steam entering the casing 14 through the inlet 15 fills the openings 34 a and the space between the top and side of the 35 J caused to register and the steam is then free ter when closed.

disk 17 and the adjacent surfaces of the chamber 34, with the efl 'ect of substantially balancing the valve on its seat 2-3. When the stem 18 is turned to the position represented in Fig. 3, the openings and 26 in the disk 17 and seat 23, respectively, are

to pass from the inlet 15 out through the outlet 16, and thence to the blower, as described. @The spring 33 serves to prevent unseating of the disk'17 and, consequently access of dirt or grit between the seat-23 and disk 17, when pressure through the casing 14 isreversed, as where the piping connecting this valve to the blower is connected up with a house-blower, as is usually done when the locomotive is first fired. i

It will be noted from the foregoing that thevalve may be readily operated, and that by reason of its construction may be used for controlling fluid under high.pressure without danger of binding the valve. Furthermore, the valve is caused, in the construction described, to be operated automatically bythe action of the throttle-lever, without eflecting the positioning of the lat- The feature of providing the 27 in connection with the valve-seat 23 is desirable, as the valve is rendered steam tight, even when used under high pressure. While I have illustratedmy improved valve in connection with a throttle-lever for controlling the flow of steam "to the blower,

I do not wish to be understood as intending to limit it to use in this combination, as it stem-j ournal may be utilized in' other situations where an easily operated valve of this type is de-.

sirablc.

Vhat I claim as new and desire to secure by Letters Patent, is

1. A valve formed of a casing containing an inlet and outlet, a seat in said casing containing an opening, and a stem-equipped rotary disk cooperating with said seat and containing an opening. adapted to be moved into registration with the opening in said seat and opening through said disk in a radial direction, said disk-opening communieating with said inlet when the valve is in both open and closedposition.

2. A valx'e formed of a casing containing an inlet and outlet, a seat in said casing con taining an opening, and a stem-equipped rotary disk cooperating with said seat and having its longitudinallyextending sides spaced from said casing-wall and containing an opening adapted to be moved into registration with the openinoin said seat and opening through the disk in a radial direction, said disk-opening communicating with said inlet when the valve is in both open and closed position. I

3. A valve formed of a casingcont-aining an inlet and outlet, .2, seat in said casing contary disk cooperating with said seat and having its longitudinally-extending sides' spaced from said casing-wall and containing 'opemngs adapted to be moved into registration with the openings in said seat and opening through thedisk in a radial direction, said disk-openings commtmicating'with said inlet when the valve is in both open and closed postion. r a I 5. A valve formed of a casing containing an inlet and outlet, a. seat in said casing containii g openings, and a stem-equipped rotary dlsk cooperating with said seat and dhaving its longitudinally-extending sides spaced from said casing-wall, said disk contalnmg a circular series of radially-extendmg 'opemngs and openings communicating with-said radial openings and adapted to be a saidseat, said radially-extending openings communicating with said 'inlet' when the "valve is in both open and closed position.

moved into registration with the openings in 67 A valve'formed of acasing containing an inlet and outlet, a. seat in said casing containing an opening, and a stem-equipped rotarydisk cooperating with said seat and having its longitudinally-extending sides and one face spaced from the walls of the casing, said disk containing a radial opening and an opening extending through the underside of said disk and communicating with said radial opening, and adapted to be moved into registration with the opening in said seat, said radially-extending opening communicating with said inlet when the valve is in both open and closed position.

7. A valve formed of a casing containing an inlet and outlet, a seat in said casing containing a plurality of spaced openings, and a stem-equipped rotary disk cooperating with said seat and having its longitudinallyextending sides and one face spaced from the walls of the casing, said disk containing a plurality of radially-extending openings, and openings extending through the underside of said disk and communicating, with said radial openings and adapted to be moved into registration with the openings in said seat, said radially-extending openings communicating with said inlet when the valve is in both open and closed position.

8. A valve formed of a casing containing an inlet and an outlet, a. seat in said casing containing an opening, and a stein-equipped rotary disk cooperating with said seat and containing a passage opening at one end through a faceof the disk and adapted to be moved into registration with the opening in the seat and opening at its opposite, inlet end through the side wall of the disk and presenting a wall opposed to the imperforate portion of said seat when the valve is closed against which the fluid in the valve impinges the inlet end of said passage communicating with said casing-inlet when the valve is in both open and'closed position.

FRED LOEDI GE. In presence of:

R. A. SCIIAEFER, J. WILSON. "i 

